lavigne



'(No Model.)

J. P. LAVIGNE. DRILLING MACHINE.

No. 515,237. Patented Feb. 20, I894.

limmm.

llllll TATES ATENT I rrrcn.

JOSEPH P. LAVIGNE, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO THE LAVIGNE &; SCOTT MANUFACTURING COMPANY, OF SAME PLACE.

MACHINE.

SPECIFIGATION forming part of Letters Patent No. 515,237, dated February 20, 1894.

Application filed July 24, 1893.

T0 0; whom it may concern:

Be it known that I, JOSEPH P. LAVIGNE, of New Haven, in the county of New Haven and State of Connecticut, have invented a new Improvement in Drilling-Machines; and I do hereby declare the following, when taken in connection with accompanying drawings and the letters of reference marked thereon, to be afull, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in

Figure 1, a broken view in front elevation of a drilling-machine constructed in accordance w1th my invention; Fig. 2, a view thereof in side elevation; Fig. 3, a plan view thereof; Fig. 4,a view in transverse section through one of the horizontal arms of the machine, showing also the upper end of one of the bearing-frames; Fig. 5, a detail view in vertical longitudinal sect-ion on the line :r.r of Fig. 3 Fig. 6, a similar view in transverse section on the line y of Fig. 5.

My invention relates to animprovementin drilling machines, the object being to produce a simple, effective and convenient machine, particularly adapted to be quickly adusted to the work required ofit, and to take care of itself afterit has been set and started.

WVith these ends in view, my invention con- SISIS lH a drilling machine having adjustable bearing-frames, each of which is provided at ts upper and lower ends with a spindle-bear- 1ng; in a radially adjustable bearing for the dr ving-shaft of the machine, and in an operatlng lever provided with a movable weight.

My lnvention further consists in certain details of construction and combinations of parts as will be hereinafter described and pointed out in the claims.

The standard of my improved machine consists by preference of an upright column A, of which only the upper end is shown, but which is of well known construction, being provided at its lower end withaflange or foot, which is secured to the floor. The upper end of the said column is constructed with two horizontal extensions B B, braced by webs B B located between them, and terminating at their outer ends in corresponding arms B 13 having their faces located in the same verti- Serial No. 481,258. (No model.)

cal plane, and each traversed throughout its length by a horizontal slot b, opening at its outer end into the center of its vertical face, and at its inner end into a chamber b extending throughout the length of each arm. These arms support bearing-frames C, of which the machine shown has three, the said frames being provided at their upper and lower ends with bearings C C, adapted to receive the opposite ends of the spindles D, each of which is provided with a pulley D, and at its lower end with a drill chuck D Under this construction it will be understood that the two bearings of each spindle are virtually integral, and always retain their same relations to each other, so that they never can get out of true. The said bearing frames are applied to the arms before mentioned, being thereto constructed with two flanges c c, at each end, the said flanges extending radially outward from the opposite sides of the said bearings C C formed at the ends of the frames. Screws 0' a passing through the said .flanges, also pass through the slots 1) in the said arms, and enter at their inner ends into coupling-nuts 0 located with the longitudinal chambers 19' into which the slots 5 before mentioned open at their inner ends. It will be understood that by loosening the screws 0', the bearing-frames may be adjusted toward and away from each other within the limits of the length of the slotted and chambered arms, whereby the spindles are differentiated in their relative positions. The operation of shifting the said frames is a very simple one, and by the construction described a person is enabled to very readily accommodate the machine to the particular job of drilling that he has inhand. By preference the vertical faces of the said arms will be graduated to assist the operator in adj usting the bearing-frames.

An arm or bracket E, proj ecting rearwardly from the upper end of the column A, is constructed with a longitudinal slot 6, opening at its inner end into a longitudinal chamber e which receives and permits the longitudinal movement of a coupling-nut F, located at the inner end of a coupling-screw F, which terminates at its upper end in a hand-wheel F treadle connections of a drilling-machine.

mounted in an adjustable bearing G, which carries the horizontal mainor driving-shaft H, the ends of which project equally beyond the opposite sides of the said bearing and carry laterally movable pulleys I I, which are free to move inward and outward on the said shaft, according to the conditions under which the machine is working. A spiral spring J, located within the inner end of the chamber e in the arm E, and impinging against the coupling-screw F, assists in moving the bearing G radially outward for taking up slack in the belt K, by means of which the machine is driven. This belt runs over a suitable cone, which has not been shown, inasmuch as it is commonly known and used, being suspended above the machine from the ceiling of the room in which the same is located, and having power supplied to it from any convenient source.

Two upright spindles L L, are located between the extensions B B, and each is furnished with a pulley L, provided for rotating the central spindle D in the same direction that the two outer spindles D, are rotated. It is not essential that the three spindles be rotated in the same direction, although it is more convenient, as it does not require the use of drills of right and left hand twist.

It will be understood that the adjustable bearing G, is moved back and forth on the arm E, not only for placing the required tension upon the belt K, but also to take up or let out the belt as required, when the same is shifted ,on the steps of the cone pulley, for

increasing or'decreasing the speed of the machine. By thus providing for taking up and letting out the belt,I am enabled to dispense with the cone, which has before been attached to the machine for the same purpose.

A vertically adjustable bed M, located below the spindles, is provided with a depending shank M, mounted in an upright bearing-box M located at the forward end of a horizontal arm M offsetting from a collar M embracing the column A. The lower end of the shank M is constructed to form a rack, the teeth of which are taken into by a gearwheel N, mounted on a horizontal rock-shaft N, having bearing in the arm M before mentioned. The said shaft is furnished at one end with a lever 0, provided at its outer end with a handle 0, and at its inner end with a small block 0 having a vertical perforation, which receives the upper end of a treadle-rod P, the lower end of which has the usual A set-screw 10' entering the said block O ,in1- pinges against the upper end of the rod, and couples the same with the block, and hence with the lever O. In some cases, however, the screw is reversed, so as to permit the rod to slide up and down through the block, as will be referred to later on.

A rod Q, ofisetting from the outer face or side of the lever O, and extending parallel therewith, has its forward end bent at a right angle, as at Q, for attachment to the forward end of the said lever, just in rear of the handle 0 thereof, the rear end of the rod being supported by a horizontal arm Q projecting outward from the inner end of the lever at a right angle, and adapted at its outer end to have the rod Q passed through it. An operating weight R, which as herein shown has the form of a ball, is mounted on the rod Q, between the bent forward end Q thereof and the arm Q and is adapted to be moved back and forth on the said portion of the rod,which also carries an adjustable stop R, to limit the movement of the ball. The ball is provided with a radial opening containing a spring g, which is held in place bya screw q. By moving the ball to the extreme forward end of the rod Q, the rock-shaft willbe turned so as to depress the bed M, whereby clearance is given between the same and the spindles. On the other hand, by moving the ball on the rod Q to a point to the rear of the rockshaft, the ball operates by its weight to turn the shaft, and thus raise the bed and feed the work to the drill. It will be understood that the more the ball is moved to the rearward, the greater its leverage will be, and the faster it will feed.

If it is desired to feed the work in boring a very long hole, the work is started with the rear end of the lever tilted upward, and at such a'time the ball is prevented from sliding forward by means of the small spring q, located within it, suflicient tension being thereto placed upon the spring by means of the screw q before mentioned. When the ball is being used as described for feeding the work, the set-screwp', is reversed so as to virtually disconnect the operating-lever from the treadlc-lnechanism. When, on the other hand, it is desired to feed the work rapidly by means of the treadle and foot power, the screw is turned to connect the lever with the treadle-rod. It will thus be seen that by means of the ball I can set myimproved machine so that it will feed itself. The project ing rear end of the rod Q, is furnished with an adjustable counter-weight S, which is moved back and forth according to the weight of the table or bed M, and the load thereof, so as to counter-poise the same. It is desirable of course, that the bed be in balance for the best operation of the operating weight R, the full force of which is then secured.

I would have it understood that I do not limit myself to the exact construction herein shown and described, but hold myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of my invention. I am aware, however, that a multiple drilling machine having laterally adjustable independent boxes for its several chuck-carrying spindles, is old. I am also aware that a drilling machine having a horizontally adjustable bracket carrying one of its pulleys and movable for taking up or letting out slack in the belt which drives the too chuck-carrying spindles of the machine is old. I do not therefore claim either of those constructions broadly.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a drilling-machine, the combination with the standard thereof, of two horizontal arms connected with the upper end of the said standard, two or more independent bearing frames directly connected, for independent lateral adjustment, by their upper and lower ends to the said arms, and each provided with two independent spindle-bearings, spindles mounted in the said bearings, pulleys located upon the spindles between the said bearings, and power connections for the pulleys, the said bearings being bowed or shaped between their upper and lower ends to give clearance to the said pulleys, substantially as described.

2. In a drilling machine, the combination with the standard thereof, of two horizontal arms connected with the said standard, and each having a longitudinal slot opening outward, and a longitudinal chamber into which the inner end of the said slot opens, two or more bearing-frames attached, for independent lateral adjustment, by their upper and lower ends to the said arms through the slots and chambers therein, and each furnished at its upper and lower end with a spindle-bearing, spindles mounted in the said bearings, pulleys located upon the said spindles between the said bearings, which are bowed or shaped so as to give them clearance, and power-connections for the pulleys, substantially as set forth.

3. In a drilling-machine, the combination with the standard thereof, of two horizontal arms connected with the upper end of said standard, and having their outer faces located in the same vertical plane, and each having a longitudinal slot opening outward, and a longitudinal chamber into which the inner end of the said slot opens, two or more bearing-frames attached, for independent lateral adjustment, to the said arms by their upper and lower ends, and through the said slots and chambers therein, and each furnished at its upper and lower end with a spindle-bearing, spindles mounted in the said spindlebearings, pulleys located upon the said spindles between their ends and the said bearings, which are bowed or shaped to clear them, and power connections for the said pulleys, substantially as described.

4. In a drilling-machine, the combination with the standard thereof, two horizontal arms connected with the upper end of thesaid standard, two or more bearing-frames directly attached, for independent lateral adjustment, to the said arms by their upper and lower ends, and each provided with two spindle bearings, spindles mounted in the said bearings, pulleys located upon the spindles between their ends and the said bearings, which are bowed or shaped to give them clearance, an arm or bracket extending rearwardly from the standard, a bearing mounted 'upon the said'arm and adjustable thereon toward and away from the spindles, a horizontal shaft carried by the said bearing, and idle pulleys loosely mounted on the ends of the shaft on which they are laterally movable, substantially as set forth, and whereby the speed of the machine may be changed by the use of a single cone located above the lathe, and without the use of a cone attached to the machineframe.

5. In a drilling machine, the combination with the bed thereof, of a rock-shaft, connection between the bed and shaft,whereby movement of the latter vertically adjusts the former, an operating-lever connected with the shaft, a rod connected with the lever and extending parallel therewith, and a movable weight mounted upon the rod, substantially as described.

In testimony whereof I have signed this specification in the presence of two subscrib ing witnesses.

JOSEPH P. LAVIGNE.

Witnesses:

FRED O. EARLE, GEORGE D. SEYMOUR. 

